:root,
[data-theme="tinta"] {
  color-scheme: light;
  --bg: #f3ead8;
  --bg-elev: #ebe1cc;
  --bg-card: #fff8ea;
  --line: #d7cbb3;
  --line-strong: #b9a888;
  --text: #1b1710;
  --muted: #5c5346;
  --green: #0b5a20;
  --green-bright: #0f6a27;
  --green-soft: #0c5c22;
  --blue: #283090;
  --blue-bright: #3943b8;
  --kw: #e6f0c8;
  --str: #ead67a;
  --num: #9fd4ea;
  --fn: #e8a8bc;
  --cmt: #b7c9b0;
  --bool: #e8b070;
  --code-bg: #102820;
  --code-fg: #e4e2ea;
  --code-muted: #9b9aab;
  --danger: #b4233a;
  --btn-fg: #f7f1e4;
  --btn-hover: #148033;
  --on-soft: #f7f1e4;
  --btn-blue-fg: #eef0ff;
  --btn-blue-hover: #3842b8;
  --header-bg: rgba(243, 234, 216, 0.9);
  --chip-bg: rgba(255, 248, 234, 0.8);
  --inset: #efe4cd;
  --out-bg: #0e241c;
  --kbd-bg: #efe6d2;
  --logo-bg: #1b1710;
  --logo-border: rgba(40, 48, 144, 0.45);
  --aula-wash: rgba(11, 90, 32, 0.12);
  --dl-wash: rgba(15, 106, 39, 0.14);
  --rec-glow: 0 0 0 1px rgba(15, 106, 39, 0.4);
  --menu-bg: #fff8ea;
  --radius: 10px;
  --shadow: 0 14px 36px rgba(80, 60, 20, 0.12);
  --font: "Figtree", system-ui, sans-serif;
  --display: "Fraunces", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --max: 1120px;
  --bg-image:
    linear-gradient(180deg, rgba(40, 48, 144, 0.07), transparent 22rem),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 27px,
      rgba(28, 24, 18, 0.055) 28px
    );
}

/* Quadro-negro da escola: giz claro sobre verde-escuro. */
[data-theme="quadro"] {
  color-scheme: dark;
  --bg: #16382c;
  --bg-elev: #1a4033;
  --bg-card: #1c4537;
  --line: #2f5e4c;
  --line-strong: #4a7a64;
  --text: #f3efe0;
  --muted: #c5d6c8;
  --green: #0f2c22;
  --green-bright: #ead67a;
  --green-soft: #e6f0c8;
  --blue: #3d5c8a;
  --blue-bright: #9fd4ea;
  --kw: #e6f0c8;
  --str: #ead67a;
  --num: #9fd4ea;
  --fn: #e8a8bc;
  --cmt: #b7c9b0;
  --bool: #e8b070;
  --code-bg: #102820;
  --code-fg: #e4e2ea;
  --code-muted: #9b9aab;
  --danger: #f0a090;
  --btn-fg: #16382c;
  --btn-hover: #f3e39a;
  --on-soft: #16382c;
  --btn-blue-fg: #102018;
  --btn-blue-hover: #4a6a9a;
  --header-bg: rgba(18, 44, 34, 0.9);
  --chip-bg: rgba(16, 40, 32, 0.55);
  --inset: #122e24;
  --out-bg: #0e241c;
  --kbd-bg: #102820;
  --logo-bg: #0e241c;
  --logo-border: rgba(234, 214, 122, 0.35);
  --aula-wash: rgba(230, 240, 200, 0.1);
  --dl-wash: rgba(234, 214, 122, 0.12);
  --rec-glow: 0 0 0 1px rgba(234, 214, 122, 0.4);
  --menu-bg: #1c4537;
  --radius: 12px;
  --shadow: 0 18px 40px rgba(0, 12, 8, 0.35);
  --bg-image:
    radial-gradient(ellipse at 50% -10%, rgba(255, 248, 220, 0.08), transparent 32rem),
    radial-gradient(circle at 85% 70%, rgba(0, 0, 0, 0.2), transparent 36rem),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 5px,
      rgba(255, 255, 230, 0.018) 6px
    );
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background-color: var(--bg);
  background-image: var(--bg-image);
  line-height: 1.55;
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--blue-bright);
}

a:hover {
  color: var(--green-soft);
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--green-soft);
  color: var(--on-soft);
  padding: 0.6rem 1rem;
  z-index: 20;
}

.skip:focus {
  left: 1rem;
  top: 1rem;
}

.wrap {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: var(--header-bg);
  border-bottom: 1px solid var(--line);
}

.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 650;
  letter-spacing: 0.01em;
}

.bar-end {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.themes {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.themes-label {
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.theme-swatch {
  width: 1.1rem;
  height: 1.1rem;
  padding: 0;
  border-radius: 50%;
  border: 2px solid var(--sw2, var(--green-bright));
  background:
    radial-gradient(circle at 32% 32%, var(--sw2, var(--green-bright)) 34%, var(--sw, var(--bg)) 35%);
  cursor: pointer;
}

.theme-swatch[aria-checked="true"] {
  outline: 2px solid var(--text);
  outline-offset: 2px;
}

.theme-swatch-sistema {
  background: linear-gradient(135deg, #f3ead8 49%, #16382c 50%);
  border-color: #0f6a27;
}

.brand img {
  width: 44px;
  height: 38px;
  object-fit: contain;
  background: var(--logo-bg);
  border: 1px solid var(--logo-border);
  border-radius: 10px;
  padding: 3px;
}

.brand span {
  font-family: var(--display);
  font-size: 1.35rem;
  font-weight: 600;
}

.nav-toggle {
  display: none;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.45rem 0.7rem;
  font: inherit;
}

.menu {
  display: flex;
  align-items: center;
  gap: 0.2rem 1.1rem;
}

.menu a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 550;
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}

.menu a:hover,
.menu a[aria-current="page"] {
  color: var(--text);
  border-bottom-color: var(--green-bright);
}

.menu .ext {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  align-items: center;
  padding: 3.4rem 0 2.4rem;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--green-soft);
  font-weight: 650;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  font-family: var(--display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.3rem, 5vw, 4.1rem);
  margin: 0.35rem 0 0.8rem;
}

.lede {
  font-size: 1.18rem;
  color: var(--muted);
  max-width: 38rem;
  margin: 0 0 1.4rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 1.1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  text-decoration: none;
  border-radius: 999px;
  padding: 0.78rem 1.2rem;
  font-weight: 650;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
  color: inherit;
}

.btn-primary {
  background: var(--green-bright);
  color: var(--btn-fg);
}

.btn-primary:hover {
  background: var(--btn-hover);
  color: var(--btn-fg);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}

.btn-ghost:hover {
  border-color: var(--blue-bright);
  color: var(--text);
}

.btn-blue {
  background: var(--blue);
  color: var(--btn-blue-fg);
}

.btn-blue:hover {
  background: var(--btn-blue-hover);
  color: var(--btn-blue-fg);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.chip {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--muted);
  border: 1px solid var(--line);
  background: var(--chip-bg);
  padding: 0.28rem 0.6rem;
  border-radius: 999px;
}

.chip strong {
  color: var(--green-soft);
  font-weight: 650;
}

.window {
  background: var(--code-bg);
  color: var(--code-fg);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.window-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 0.9rem;
  border-bottom: 1px solid var(--line);
  color: var(--code-muted);
  font-size: 0.85rem;
}

.window-bar .copy {
  margin-left: auto;
}

.dots {
  display: flex;
  gap: 0.32rem;
}

.dots i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #3a3d4a;
  display: block;
}

.dots i:nth-child(1) {
  background: #ff7b86;
}
.dots i:nth-child(2) {
  background: #f2b85c;
}
.dots i:nth-child(3) {
  background: #7ee08a;
}

.file {
  font-family: var(--mono);
  margin-left: 0.4rem;
}

pre,
code {
  font-family: var(--mono);
}

pre {
  margin: 0;
  padding: 1rem 1.1rem 1.15rem;
  overflow-x: auto;
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--code-fg);
}

.kw {
  color: var(--kw);
  font-weight: 650;
}
.str {
  color: var(--str);
}
.num {
  color: var(--num);
}
.fn {
  color: var(--fn);
}
.cmt {
  color: var(--cmt);
  font-style: italic;
}
.bool {
  color: var(--bool);
}

.out {
  border-top: 1px solid var(--line);
  padding: 0.75rem 1.1rem 0.9rem;
  color: var(--kw);
  font-family: var(--mono);
  font-size: 0.88rem;
  background: var(--out-bg);
}

.section {
  padding: 2.6rem 0;
}

.section h2 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  margin: 0 0 0.5rem;
}

.section .intro {
  color: var(--muted);
  max-width: 42rem;
  margin: 0 0 1.5rem;
}

.grid-4,
.grid-3,
.grid-2 {
  display: grid;
  gap: 1rem;
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid-4 > .card,
.grid-3 > .card,
.grid-2 > .card {
  height: 100%;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-2 {
  grid-template-columns: 1fr 1fr;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem 1.25rem;
}

.card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.18rem;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.mark {
  font-family: var(--mono);
  color: var(--green-soft);
  font-size: 0.92em;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.8rem;
}

.tab {
  font: inherit;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
}

.tab[aria-selected="true"] {
  color: var(--on-soft);
  background: var(--green-soft);
  border-color: var(--green-soft);
}

.panel[hidden] {
  display: none;
}

.copy {
  margin-left: auto;
  font: inherit;
  font-size: 0.8rem;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  cursor: pointer;
}

.aula {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.4rem;
  align-items: center;
  background:
    radial-gradient(circle at 0 0, var(--aula-wash), transparent 18rem),
    var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 1.6rem;
}

.aula ol {
  color: var(--muted);
  padding-left: 1.15rem;
}

.aula li + li {
  margin-top: 0.35rem;
}

.aula .keys {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.9rem 0 1.1rem;
}

kbd {
  font-family: var(--mono);
  font-size: 0.82rem;
  border: 1px solid var(--line-strong);
  background: var(--kbd-bg);
  padding: 0.18rem 0.42rem;
  border-radius: 6px;
  color: var(--text);
}

a.card {
  text-decoration: none;
  color: inherit;
  display: block;
  height: 100%;
}

a.card:hover {
  border-color: var(--blue-bright);
  color: inherit;
}

.video-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 2rem;
  padding: 1.6rem 0 2.2rem;
  color: var(--muted);
}

.foot {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

.foot nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.foot a {
  color: var(--muted);
  text-decoration: none;
}

.foot a:hover {
  color: var(--text);
}

.page-hero {
  padding: 2.6rem 0 1.2rem;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3.1rem);
}

.feature-dl {
  border: 1px solid var(--green);
  background:
    radial-gradient(circle at 100% 0, var(--dl-wash), transparent 22rem),
    var(--bg-card);
  border-radius: 22px;
  padding: 1.6rem;
  margin-bottom: 1.4rem;
}

.feature-dl h2 {
  margin-top: 0.2rem;
}

.os-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
  margin: 1.1rem 0 0.4rem;
}

.os-card {
  background: var(--inset);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.os-card.recommended {
  border-color: var(--green-bright);
  box-shadow: var(--rec-glow);
}

.os-card h3 {
  margin: 0;
  font-size: 1.05rem;
}

.os-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  flex: 1;
}

.badge {
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--on-soft);
  background: var(--green-soft);
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
  margin: 1.2rem 0 0;
}

.step {
  background: var(--inset);
  border-radius: 12px;
  padding: 0.9rem 1rem;
}

.step b {
  display: block;
  color: var(--green-soft);
  font-family: var(--mono);
  font-size: 0.8rem;
  margin-bottom: 0.25rem;
}

.alt h3 {
  margin-top: 0;
}

.author {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 1.4rem;
  align-items: start;
}

.portrait {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 1.4rem;
  text-align: center;
}

.portrait img {
  width: 96px;
  height: 84px;
  object-fit: contain;
  margin-bottom: 0.6rem;
  background: var(--logo-bg);
  border: 1px solid var(--logo-border);
  border-radius: 14px;
  padding: 8px;
}

.portrait h2 {
  margin: 0.2rem 0;
  font-size: 1.5rem;
}

.links {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.links li {
  margin: 0.45rem 0;
}

.links a {
  text-decoration: none;
  font-weight: 600;
}

.lang {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.9rem;
}

[data-theme="quadro"] h1,
[data-theme="quadro"] h2 {
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.28);
}

[data-theme="tinta"] .btn {
  border-radius: 8px;
}

[data-theme="tinta"] .window {
  border-color: #2f5e4c;
}

[data-theme="tinta"] .window-bar,
[data-theme="tinta"] .out {
  border-color: #2f5e4c;
}

@media (max-width: 1100px) {
  .grid-4 {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 900px) {
  .hero,
  .aula,
  .author,
  .grid-4,
  .grid-3,
  .os-row,
  .steps {
    grid-template-columns: 1fr;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
  }

  .menu {
    display: none;
    position: absolute;
    top: 4.1rem;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--menu-bg);
    border-bottom: 1px solid var(--line);
    padding: 0.6rem 1rem 1rem;
  }

  .menu.open {
    display: flex;
  }

  .menu a[aria-current="page"] {
    border-bottom-color: transparent;
    color: var(--green-soft);
  }

  .hero {
    padding-top: 2rem;
  }

  .themes-label {
    display: none;
  }
}

.page-main {
  display: flex;
  flex-direction: column;
}

.page-main > .kicker {
  order: -1;
  padding-top: 2.6rem;
  margin-bottom: 0;
}

.page-main:has(> .kicker) > .page-hero {
  padding-top: 0.35rem;
}

.page-layout {
  display: grid;
  grid-template-columns: 1fr 16rem;
  gap: 1.4rem;
  align-items: start;
  padding-bottom: 2rem;
}

.post-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.post-card h2 {
  margin: 0 0 0.35rem;
  font-size: 1.45rem;
}

.post-card h2 a {
  color: var(--text);
  text-decoration: none;
}

.post-card h2 a:hover {
  color: var(--green-soft);
}

.post-meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 0.7rem;
}

.post-card .summary {
  color: var(--muted);
}

.post-card .summary img {
  max-width: 100%;
  border-radius: 10px;
  margin: 0.6rem 0;
}

.post-card .summary p:first-child {
  margin-top: 0;
}

.side-card h3 {
  margin: 0 0 0.7rem;
  font-size: 1.05rem;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag-chip {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  border: 1px solid var(--line);
  background: var(--chip-bg);
  padding: 0.22rem 0.55rem;
  border-radius: 999px;
  text-decoration: none;
}

.tag-chip:hover {
  color: var(--text);
  border-color: var(--green-bright);
}

.pager {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
  margin: 1.2rem 0 0;
}

.pager:not(:has(a)) {
  display: none;
}

.pager .current,
.pager a {
  min-width: 2rem;
  text-align: center;
  padding: 0.35rem 0.55rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--text);
}

.pager .current {
  background: var(--green-bright);
  color: var(--btn-fg);
  border-color: transparent;
}

.article {
  max-width: 46rem;
  padding-bottom: 2rem;
}

.article-hero {
  padding: 2.4rem 0 0.6rem;
}

.article-hero h1 {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
}

.article p,
.article li {
  line-height: 1.65;
}

.article img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 0.8rem 0;
  border: 1px solid var(--line);
}

.article pre {
  background: var(--code-bg);
  color: var(--code-fg);
  border: 1px solid #2f5e4c;
  border-radius: 12px;
  padding: 1rem 1.1rem;
  overflow: auto;
  font-family: var(--mono);
  font-size: 0.92rem;
}

.article code {
  font-family: var(--mono);
  font-size: 0.9em;
}

.article :not(pre) > code {
  background: var(--inset);
  padding: 0.1rem 0.35rem;
  border-radius: 6px;
}

.article table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0;
  font-size: 0.95rem;
}

.article th,
.article td {
  border: 1px solid var(--line);
  padding: 0.45rem 0.7rem;
  text-align: left;
}

.article th {
  background: var(--bg-elev);
}

.article blockquote {
  margin: 1rem 0;
  padding: 0.2rem 0 0.2rem 1rem;
  border-left: 3px solid var(--green-bright);
  color: var(--muted);
}

.comments {
  max-width: 46rem;
  margin: 0 auto 2.4rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--line);
}

.comment {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  margin: 0.7rem 0;
}

.comment h5 {
  margin: 0 0 0.4rem;
  color: var(--muted);
  font-weight: 550;
}

.comment-form {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-top: 1rem;
}

.comment-form label {
  font-weight: 650;
  font-size: 0.9rem;
}

.comment-form input,
.comment-form textarea {
  font: inherit;
  color: var(--text);
  background: var(--bg-card);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  padding: 0.55rem 0.7rem;
}

.comment-form button {
  align-self: flex-start;
  font: inherit;
  font-weight: 650;
  background: var(--green-bright);
  color: var(--btn-fg);
  border: 0;
  border-radius: 999px;
  padding: 0.7rem 1.15rem;
  cursor: pointer;
}

.comment-success {
  color: var(--green-soft);
}

.comment-error {
  color: var(--danger);
}

.website-field {
  position: absolute;
  left: -9999px;
  height: 0;
  overflow: hidden;
}

.captcha-image svg {
  display: block;
  max-width: 16rem;
  background: var(--bg-card);
  border-radius: 8px;
}

@media (max-width: 900px) {
  .page-layout {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .btn:hover {
    transform: none;
  }
}